package com.wa.aware;

import org.springframework.beans.BeansException;
import org.springframework.context.ApplicationContext;
import org.springframework.context.ApplicationContextAware;
import org.springframework.stereotype.Service;

/**
 *  Spring中使用两种Aware接口自定义获取bean
 */
@Service
public class ApplicationContextAwareTest implements ApplicationContextAware {

    private static ApplicationContext applicationContext;

    @Override
    public void setApplicationContext(ApplicationContext applicationContext) throws BeansException {
        this.applicationContext = applicationContext;
    }

    public static Object getBean(String beanName) {
        if (applicationContext == null) {
            throw new NullPointerException("ApplicationContext is null!");
        }
        return applicationContext.getBean(beanName);
    }

    public static ApplicationContext getApplicationContext() {
        return applicationContext;
    }
}